One common use of heavy duty tension springs is in the automotive industry, where they are used in suspension systems to support the weight of the vehicle and provide a smooth ride. These springs are typically made from high-quality materials such as steel or alloy, which can withstand the stress and strain of constant use.

 In conclusion, extension springs play a vital role in many mechanical systems, providing the force required for extension and retraction. Available in a variety of designs and types, including loop ends, hook ends, custom options, and expansion springs, these components provide versatile solutions for a variety of applications. Understanding the different hook types and designs can help select the extension spring that best suits your specific engineering and manufacturing needs.

 Small extension springs, on the other hand, are ideal for applications where space is limited. Despite their larger size, they still provide reliable extension and retraction functions, making them suitable for use in electronics, medical equipment, and precision instruments.